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04 f-150 5.4l 3v problems

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Old 06-23-2010, 02:45 PM
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Default 04 f-150 5.4l 3v problems

Hey there I just put a new engine in my 04 F150 5.4 and now my headlights and cd player are staying on, but my light switch is turned off and the keys are out. i cant get them off without pulling a fuse, its killing my battery. i have no dim lights just straight bright lights. Im wondering if anyone else has experienced this and how they fixed it. any suggestions would be nice.
Old 06-23-2010, 02:50 PM
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Check all your grounds.
Old 06-23-2010, 05:04 PM
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they look good, re wired head lights, took headlight relay out and put back in and still same problem
Old 06-24-2010, 12:05 PM
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so i took the headlight relay out yesterday with the headlight fuse out already and then put the headlight relay back in. i then went for a drive and shut the truck off and took the key out...to my surprise my cd player wasnt staying on, and all gauges were normal. now when i plugged the headlight fuse back in it all went back to normal with headlights staying on and cd player runnning, any ideas if its the relay or something else?
Old 06-24-2010, 01:45 PM
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Default Elec issues

Sounds like you have a short or feedback occurring through that circuit. Other than trace it out, no suggestions though you could try another fuse though I don't think that's your issue.



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